Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen: doi:10.22028/D291-24099
Titel: Elasto- and electro-optical dipole properties of off-center Ag+ defects in RbI
Verfasser: Donatti, D. A.
Li, M. S.
Aegerter, Michel A.
Sprache: Englisch
Erscheinungsjahr: 1983
Quelle: Radiation effects. - 73.1983, S. 123-129
SWD-Schlagwörter: Dipol
Rubidium
Iodide
Diffusion
Absorption
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumentart : Journalartikel
Kurzfassung: Electric dipole properties of off-center Ag+ defects, introduced by a diffusion technique, were investigated in RbI. After rapid quenching and cooling the absorption spectrum consists of 4 UV bands at 4.82, 4.92, 5.12 and 5.47 eV. Their oscillator strength slightly decreases then rises with increasing temperature. Weak zero moment changes in all bands were observed when high electric field was applied along the <110> and <111> directions only. No effect occurs along <100>. The sign of the effect allows the determination of the main state of polarization of the bands: perpendicular to the dipole axis for the 4.82 and 5.12 eV, parallel to it for the 4.92 and 5.47 eV. Two models which fit equally well the results are discussed: a <111> dipole model and a restrictive <110> model with 90° reorientation only. They lead to a dipole moment of 1.16 eÅ, respectively 1.34 eÅ if polarization of the bands is assumed. Several arguments favor the <111> model with deep off-center wells for Ag+ in RbI.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-22584
hdl:20.500.11880/24155
http://dx.doi.org/10.22028/D291-24099
SciDok-Publikation: 21-Jul-2009
Fakultät: Sonstige Einrichtungen
Fachrichtung: SE - INM Leibniz-Institut für Neue Materialien
Fakultät / Institution:INM
SE - Sonstige Einrichtungen

Dateien zu dieser Ressource:
Datei Beschreibung GrößeFormat 
aeg070.pdf240,73 kBAdobe PDFÖffnen/Anzeigen


Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt.